ADD: added a reference to a generic CRC-8 checksum algo in common/crc.c

[proxmark3-svn] / client / cmddata.c

diff --git a/client/cmddata.c b/client/cmddata.c
index 0bd8a7a9e8070832ccc57f196783775ecae375e3..cea3bcfee9a7b4c46182d1c3cfc66ef0778603f3 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -32,6 +32,12 @@ static int CmdHelp(const char *Cmd);
 //by marshmellow
 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
 {
 //by marshmellow
 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
 {

+       if (buff == NULL) 
+               return;
+       
+       if ( size >= MAX_DEMOD_BUF_LEN)
+               size = MAX_DEMOD_BUF_LEN;
+       

        size_t i = 0;
        for (; i < size; i++){
                DemodBuffer[i]=buff[startIdx++];
        size_t i = 0;
        for (; i < size; i++){
                DemodBuffer[i]=buff[startIdx++];


@@ -86,7 +92,24 @@ void printDemodBuff(void)
 
 int CmdPrintDemodBuff(const char *Cmd)
 {
 
 int CmdPrintDemodBuff(const char *Cmd)
 {

-  printDemodBuff();
+  char hex;
+  char printBuff[512]={0x00};
+  uint8_t numBits = DemodBufferLen & 0xFFF0;
+  sscanf(Cmd, "%c", &hex);
+  if (hex == 'h'){
+    PrintAndLog("Usage: data printdemodbuffer [x]");
+    PrintAndLog("Options:        ");
+    PrintAndLog("       h       This help");
+    PrintAndLog("       x       output in hex (omit for binary output)");
+    return 0;
+  }
+  if (hex == 'x'){
+    numBits = binarraytohex(printBuff, (char *)DemodBuffer, numBits);
+    if (numBits==0) return 0;
+    PrintAndLog("DemodBuffer: %s",printBuff);
+  } else {
+    printDemodBuff();
+  }

   return 1;
 }
 int CmdAmp(const char *Cmd)
   return 1;
 }
 int CmdAmp(const char *Cmd)


@@ -520,6 +543,7 @@ int CmdBiphaseDecodeRaw(const char *Cmd)
        PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
        printBitStream(BitStream, size);
        PrintAndLog("\nif bitstream does not look right try offset=1");
        PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
        printBitStream(BitStream, size);
        PrintAndLog("\nif bitstream does not look right try offset=1");

+  if (offset == 1) setDemodBuf(DemodBuffer,DemodBufferLen-1,1);  //remove first bit from raw demod

        return 1;
 }
 
        return 1;
 }
 


@@ -534,7 +558,7 @@ void setBiphaseDemodBuf(uint8_t *BitStream, size_t size)
     return;
   }
   for (size_t idx=0; idx<size; idx++){
     return;
   }
   for (size_t idx=0; idx<size; idx++){

-    if(BitStream[idx]){
+    if(!BitStream[idx]){

       rawStream[i++] = curPhase;
       rawStream[i++] = curPhase;
       curPhase ^= 1; 
       rawStream[i++] = curPhase;
       rawStream[i++] = curPhase;
       curPhase ^= 1; 


@@ -1015,7 +1039,7 @@ int FSKrawDemod(const char *Cmd, bool verbose)
     if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits  most tags will have full bit stream inside that sample size
     if (verbose) {
       PrintAndLog("FSK decoded bitstream:");
     if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits  most tags will have full bit stream inside that sample size
     if (verbose) {
       PrintAndLog("FSK decoded bitstream:");

-      printBitStream(BitStream,size);
+    printBitStream(BitStream,size);

     }
 
     return 1;
     }
 
     return 1;


@@ -1762,7 +1786,8 @@ int NRZrawDemod(const char *Cmd, bool verbose)
     if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
     return 0;
   }
     if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
     return 0;
   }

-  PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+  if (verbose) 
+       PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);

   //prime demod buffer for output
   setDemodBuf(BitStream,BitLen,0);
 
   //prime demod buffer for output
   setDemodBuf(BitStream,BitLen,0);
 


@@ -1770,9 +1795,9 @@ int NRZrawDemod(const char *Cmd, bool verbose)
     PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
   }
   if (verbose) {
     PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
   }
   if (verbose) {

-    PrintAndLog("NRZ demoded bitstream:");
-    // Now output the bitstream to the scrollback by line of 16 bits
-    printDemodBuff();
+  PrintAndLog("NRZ demoded bitstream:");
+  // Now output the bitstream to the scrollback by line of 16 bits
+  printDemodBuff();

   }
   return 1; 
 }
   }
   return 1; 
 }


@@ -2594,7 +2619,7 @@ static command_t CommandTable[] =
   //{"nrzrawdemod",   CmdNRZrawDemod,     1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate nrz tags and output binary (args optional)"},
   {"plot",          CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
   //{"pskdetectclock",CmdDetectPSKClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
   //{"nrzrawdemod",   CmdNRZrawDemod,     1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate nrz tags and output binary (args optional)"},
   {"plot",          CmdPlot,            1, "Show graph window (hit 'h' in window for keystroke help)"},
   //{"pskdetectclock",CmdDetectPSKClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},

-  {"printdemodbuffer",CmdPrintDemodBuff,1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
+  {"printdemodbuffer",CmdPrintDemodBuff,1, "[x] -- print the data in the DemodBuffer - 'x' for hex output"},

   {"pskindalademod",CmdIndalaDecode,    1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
   //{"psk1rawdemod",  CmdPSK1rawDemod,    1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk1 tags and output binary (args optional)"},
   //{"psk2rawdemod",  CmdPSK2rawDemod,    1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk2 tags and output binary (args optional)"},
   {"pskindalademod",CmdIndalaDecode,    1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
   //{"psk1rawdemod",  CmdPSK1rawDemod,    1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk1 tags and output binary (args optional)"},
   //{"psk2rawdemod",  CmdPSK2rawDemod,    1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate psk2 tags and output binary (args optional)"},